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SQL Table DDL Generator

Generate CREATE TABLE DDL statements from column definitions. Supports PostgreSQL, MySQL, SQLite, and SQL Server dialects with primary keys, auto-increment, NOT NULL, UNIQUE, defaults, and column comments. Runs entirely in your browser — your data never leaves your machine.

sql database ddl schema generator postgresql mysql sqlite

Published May 31, 2026

All interactive tools run entirely in your browser. Your data never leaves your device.

How It Works

Define your table name, choose a SQL dialect, and add columns with their types and constraints. The generator produces a ready-to-use CREATE TABLE statement with proper syntax for your chosen database.

Features

  • 4 SQL dialects: PostgreSQL, MySQL, SQLite, SQL Server with correct syntax for each
  • Column constraints: PRIMARY KEY, NOT NULL, UNIQUE, DEFAULT, AUTO_INCREMENT
  • Dialect-aware quoting: backticks (MySQL), square brackets (SQL Server), double quotes (PostgreSQL/SQLite)
  • Auto-increment: SERIAL (PostgreSQL), AUTO_INCREMENT (MySQL), AUTOINCREMENT (SQLite), IDENTITY (SQL Server)
  • Column comments: supported for MySQL dialect
  • IF NOT EXISTS: optional existence check
  • 5 preset examples: Users, Products, Orders, Blog Posts, Config table
  • Private: all generation runs in your browser — no data transmitted

Use Cases

  • Quickly scaffolding database tables during development
  • Converting table designs between different database dialects
  • Generating DDL from spreadsheet-style column definitions
  • Learning SQL DDL syntax differences across database engines
  • Prototyping database schemas before writing migrations